CN217081579U

CN217081579U - Dump valve and oil tank thereof

Info

Publication number: CN217081579U
Application number: CN202220843543.XU
Authority: CN
Inventors: 葛中华
Original assignee: NINGBO LIKAITE ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Current assignee: NINGBO LIKAITE ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-07-29
Anticipated expiration: 2032-04-12

Abstract

The application discloses dump valve and oil tank thereof includes: the oil tank valve comprises a valve body and an inner core, wherein the inner core is installed in the valve body, the wall surface of the valve body is provided with an air outlet, the air outlet penetrates through the inside and the outside of the valve body, the bottom of the inner core is provided with a groove communicated with an oil tank, the side wall surface of the inner core is provided with at least one notch, and the notch is communicated with the air outlet and the groove. The ventilation inside and outside the oil tank is smooth, the pressure in the oil tank is stable, the oil film is avoided, and the use safety of the oil tank is improved.

Description

Dump valve and oil tank thereof

Technical Field

The application relates to the technical field of engines, in particular to a dump valve and an oil tank thereof.

Background

In the prior art, in order to ensure that the pressure inside the oil tank is balanced with the external pressure, an air hole for ventilation is usually required to be formed on the oil tank. If a common vent pipe or vent hole is adopted, air can be introduced when the liquid level in the oil tank drops, and the air pressure in the oil tank can be kept normal. However, since the vent pipe or vent hole on the fuel tank is in two-way communication, when the fuel tank is in a tilted state or due to shaking during transportation of the equipment, fuel in the fuel tank may leak. Moreover, most of the fuel in the fuel tank is volatile substances, and the volatile fuel can also leak through a vent pipe of the fuel tank.

The Chinese patent application 'a general gasoline engine oil tank overturning stop valve', applies (patent) No.: CN 201220352042.8; disclosed is a method for producing: including a valve body, constitute a working chamber in the valve body there is a case in the working chamber, the case lower extreme is equipped with the spring, and the spring lower extreme is equipped with the disk seat, and the valve body outside is equipped with the installation gum cover, the oil tank is located to the installation gum cover with between the valve body, the valve body with the disk seat is the screens cooperation, the air vent of working chamber with the head of case is that the cooperation of awl is sealed, the utility model discloses the purpose is in overcoming above-mentioned prior art's weak point, provides a simple structure, simple to operate, and low in manufacturing cost's oil tank lid formula upset stop valve, reduces logical machine fuel evaporation pollutant controlling means's manufacturing cost and the installation cost on current logical machine oil tank with, has also saved the expense of fuel tank cap.

After the turnover check valve with the structure is used, an oil film is easily generated between the valve core and the valve seat, so that the turnover check valve is not ventilated or is difficult to ventilate, and an engine is flamed out. In this regard, the inventors of the present application have made further improvements to the dump valve to solve the above-described problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an aim at provides a dump valve and oil tank thereof makes the oil tank inside and outside smooth and easy to ventilate, and the oil tank internal pressure is stable, avoids the production of oil film, has improved the security that the oil tank used.

The technical scheme adopted by the application is as follows: a dump valve comprising: the oil tank valve comprises a valve body and an inner core, wherein the inner core is installed in the valve body, the wall surface of the valve body is provided with an air outlet, the air outlet penetrates through the inside and the outside of the valve body, the bottom of the inner core is provided with a groove communicated with an oil tank, the side wall surface of the inner core is provided with at least one notch, and the notch is communicated with the air outlet and the groove.

Compared with the prior art, the valve has the advantages that the air outlet is arranged at first to communicate the external environment with the valve body. In the prior art, gas exchange between the external environment and the oil tank is realized through the bottom of the valve core, and an oil film is easily generated between the valve core and the valve seat. This application further sets up the recess bottom the inner core, recess intercommunication oil tank. At least one notch is further formed in the side wall surface of the inner core, and the notch is communicated with the air outlet hole and the groove. The notch sets up with the cooperation of recess, prevents the production of oil film in the valve body, ensures to switch on the external environment of oil tank internal environment and valve body, and the valve body ventilates smoothly, and the engine normally works.

In addition, the arrangement of the notches on the side wall surface of the inner core can break the oil waves generated by the vibration of the engine in the actual use process, so that the oil waves are prevented from being sprayed out of the pipe orifice due to the fact that the oil waves fluctuate too high.

In some embodiments of the present application, the inner core is a cylindrical structure as a whole; the bottom of the inner core is provided with an annular groove, and the spring is arranged in the groove.

In some embodiments of the present application, the sidewall surface of the core is formed with a plurality of notches. In the actual use process, if the vehicle runs on a bumpy road section and the vehicle fluctuates up and down, oil in the oil tank can surge and even enter the groove of the oil tank cover. The notch is arranged to divide oil which flows into the groove, and oil waves generated by vibration of the engine can be broken, so that the fluctuation height of the oil is reduced, the oil is prevented from leaking from the air outlet, and the oil leakage caused by bumping of a vehicle is avoided. Preferably, eight notches are uniformly distributed on the side wall surface of the inner core.

In some embodiments of the present application, the slots are arranged parallel to the axial direction of the core. Specifically, the notch penetrates through the top surface and the bottom surface of the inner core. In this application, the notch is long and narrow type structure, and the notch can be separated into thin tributary with fluid to the power that differential fluid is surged.

In some embodiments of the present application, the valve body is provided with an installation groove on the outer peripheral surface, and the installation groove is provided with a series of rubber sleeves with different outer diameter sizes. The rubber sleeve is used for being installed at the oil tank opening. Therefore, the oil tank port can adapt to different types of oil tank ports, namely, the oil tank can adapt to different types of oil tanks as long as the rubber sleeve is replaced.

In some embodiments of the present application, the cross section of the rubber sleeve has a T-shaped structure, and the inner wall surface of the rubber sleeve is matched with the mounting groove.

In some embodiments of the present application, the present application further includes a base, the base is a bowl-shaped structure, a through hole is formed in the center of the base, and the through hole is communicated with the groove.

In some embodiments of the present application, the bottom of the valve body is embedded in the base, and the bottom of the valve body is clamped with the base. One end of the spring is propped against the bottom surface of the base; the other end of the spring extends into the groove and acts on the inner core. The installation of valve body, spring, inner core has been realized to the setting of base to and cooperation each other.

In some embodiments of the present application, the bottom wall of the valve body is opened with an opening. The bottom of the valve body has good elastic deformation performance and can be clamped and connected with the base in a matching mode.

In some embodiments of the present application, the top surface of the base abuts against the bottom surface of the rubber sleeve. The base has played limiting displacement to the rubber sleeve simultaneously, has ensured the reliability of rubber sleeve installation.

In some embodiments of this application, the top of inner core be provided with the shutoff piece that suits with the venthole structure, the shutoff piece insert the venthole completely then the venthole is closed, the inner core under the normal operating condition not with the contact of venthole inner wall, the inner core pass through the spring and install in the valve body, the spring provides the power that the inner core faced the venthole.

Preferably, the plugging piece is made of elastic materials, and the better sealing requirement can be met. For example, the plugging member is made of rubber material.

In normal use (i.e. the gasoline tank is not toppled), the inner core is subjected to vertical downward gravity due to the gravity of the inner core, and although the inner core is also subjected to upward elastic force applied to the inner core by the spring, in normal use, the gravity of the inner core is greater than the elastic force. Therefore, the inner core is away from the air outlet, the inner core is not contacted with the air outlet, namely, the air outlet is in a normal ventilation state. When the air vent is in a dumping state, the inner core does not have enough gravity to offset the elastic force of the spring any more, at the moment, the spring can push the inner core to move towards the air vent, and the air vent is closed when the inner core is inserted into the air vent. So far, this application has realized that the oil tank is inside and outside to ventilate smoothly, and the oil tank internal pressure is stable, can not the oil leak when the oil tank emptys.

In some embodiments of the present application, the air outlet is an inverted conical structure, and the blocking piece is a conical structure.

In addition, this application sets up the venthole and is conical structure, plays good guide effect when the shutoff piece removes, ensures when empting, and the shutoff piece can be closed the venthole completely, avoids the leakage of fluid, has improved the security that the oil tank used.

In some embodiments of the present application, the valve body is provided with an outlet pipe, and the outlet pipe is communicated with the outlet hole. The air outlet pipe is matched with the air outlet hole, so that the air pressure inside and outside the valve body is conducted with each other.

An oil tank of a gasoline engine comprises a tank body and an oil tank cover.

Drawings

The present application will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a cross-sectional view of the present application;

fig. 3 is an exploded view of the present application.

Wherein the reference numerals are specified as follows: 1. a valve body; 2. an inner core; 3. an air outlet; 4. a blocking member; 5. a spring; 6. an air outlet pipe; 7. a groove; 8. a notch; 9. mounting grooves; 10. a rubber sleeve; 11. a base; 12. and (4) opening.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

A dump valve, embodiment one, as shown in fig. 1-3: the method comprises the following steps: a dump valve comprising: the valve comprises a valve body 1 and an inner core 2, wherein the inner core 2 is arranged in the valve body 1, the wall surface of the valve body 1 is provided with an air outlet 3, and the air outlet 3 penetrates through the inside and the outside of the valve body 1 and is communicated with the outside environment and the inside of the valve body 1. The bottom of the inner core 2 is provided with a groove 7 communicated with an oil tank, the side wall surface of the inner core 2 is provided with at least one notch 8, and the notch 8 is communicated with the air outlet hole 3 and the groove 7. Notch 8 sets up with the cooperation of recess 7, prevents the production of oil film in the valve body 1, ensures to switch on the oil tank internal environment and the external environment of valve body 1, and valve body 1 ventilates smoothly, and the engine normally works.

In addition, the notch 8 on the side wall surface of the inner core 2 can break the oil waves generated by the vibration of the engine in the actual use process, and the oil waves are prevented from being sprayed out of the pipe orifice due to the fact that the oil waves are too high.

Example two, as shown in fig. 1 to 3: the whole inner core 2 is of a cylindrical structure; the bottom of the inner core 2 is provided with an annular groove 7, and the spring 5 is arranged in the groove 7.

The side wall surface of the inner core 2 is provided with a plurality of notches 8. In actual use, if the vehicle runs on a bumpy road and the vehicle fluctuates up and down, oil in the oil tank can surge and even enter the groove 7 of the oil tank cover. And the setting of notch 8 will be gushed into the fluid of recess 7 and cut apart, can hit the unrestrained breakage of oil that the engine vibration produced to reduce the height that the fluid fluctuates, avoid fluid to spill from venthole 3, just also avoided just having leaked because of the fluid that the vehicle jolted and caused. Preferably, eight notches 8 are uniformly distributed on the side wall surface of the inner core 2.

The notch 8 is arranged parallel to the axial direction of the inner core 2. Specifically, the notch 8 penetrates through the top and bottom surfaces of the core 2. In this application, notch 8 is long and narrow type structure, and notch 8 can separate into thin tributary with fluid to the power that differential fluid is shoved.

The other contents of the second embodiment are the same as those of the first embodiment.

Example three, as shown in fig. 1 to 3: the periphery of the valve body 1 is provided with a mounting groove 9, and the mounting groove 9 is provided with a series of rubber sleeves 10 with different outer diameters. The rubber sleeve 10 is used for being installed at an oil tank opening. Therefore, the oil tank can adapt to oil tank ports of different models, namely oil tanks of different models, only by replacing the rubber sleeve 10. The cross section T-shaped structure of the rubber sleeve 10, the inner wall surface of the rubber sleeve 10 is matched with the mounting groove 9.

This application still includes base 11, base 11 be bowl-shaped structure, base 11 the center seted up the through-hole, through-hole and recess 7 intercommunication.

The bottom of the valve body 1 is embedded into the base 11, and the bottom of the valve body 1 is clamped with the base 11. One end of the spring 5 is abutted against the bottom surface of the base 11; the other end of the spring 5 extends into the groove 7 and acts on the inner core 2. The setting of base 11 has realized the installation of valve body 1, spring 5, inner core 2 to and the cooperation each other. The bottom wall surface of the valve body 1 is provided with an opening 12. The bottom of the valve body 1 has good elastic deformation performance and can be matched with the base 11 for clamping.

The rest of the third embodiment is the same as the first or second embodiment.

Example four, as shown in fig. 1 to 3: the top of inner core 2 be provided with the shutoff piece 4 that suits with venthole 3 structure, shutoff piece 4 insert venthole 3 completely and then venthole 3 closes, inner core 2 under the normal operating condition does not contact with 3 inner walls of venthole, inner core 2 install in valve body 1 through spring 5, spring 5 provides the power that inner core 2 faced venthole 3.

In a normal use state (i.e. the gasoline tank is not toppled), the inner core 2 receives vertical downward gravity due to the self gravity, and although the inner core 2 is also provided with upward elastic force applied to the inner core by the spring 5, in the normal use state, the gravity of the inner core 2 is larger than the elastic force. Therefore, the inner core 2 is away from the air outlet 3, and the inner core 2 is not in contact with the air outlet 3, i.e. the air outlet 3 is in a normal ventilation state. In the toppling state, the inner core 2 does not have enough gravity to offset the elastic force of the spring 5, at the moment, the spring 5 can push the inner core 2 to move towards the air outlet 3, and the air outlet is closed when the inner core 2 is inserted into the air outlet 3. So far, this application has realized that the oil tank is inside and outside to ventilate smoothly, and the oil tank internal pressure is stable, can not the oil leak when the oil tank emptys.

The air outlet 3 is of an inverted conical structure, and the plugging piece 4 is of a conical structure. In addition, this application sets up venthole 3 and is conical structure, plays good guide effect when blocking 4 remove, ensures when empting, and blocking 4 can be closed venthole 3 completely, avoids the leakage of fluid, has improved the security that the oil tank used.

An air outlet pipe 6 is arranged on the valve body 1, and the air outlet pipe 6 is communicated with the air outlet hole 3. The air outlet pipe 6 is matched with the air outlet hole 3, so that the air pressure inside and outside the valve body 1 is communicated with each other.

The other contents of the fourth embodiment are the same as those of the first embodiment, the second embodiment or the third embodiment.

The oil tank comprises a tank body and the dump valve, wherein the upper end of the tank body is provided with an oil tank opening, and the dump valve is arranged at the oil tank opening. The present application has been described in detail above, and specific examples thereof are used herein to explain the principles and implementations of the present application, which are presented solely to aid in understanding the present application and its core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. The utility model provides a dump valve, its characterized in that includes valve body (1) and inner core (2), inner core (2) install in valve body (1), valve body (1) wall seted up venthole (3), venthole (3) link up inside and outside valve body (1), inner core (2) bottom be provided with recess (7) and oil tank intercommunication, inner core (2) side wall seted up at least one notch (8), notch (8) communicate venthole (3) and recess (7).

2. The pouring valve according to claim 1, characterized in that said inner core (2) has an overall cylindrical configuration; the bottom of the inner core (2) is provided with an annular groove (7), and the spring (5) is arranged in the groove (7).

3. The pouring valve according to claim 1, characterized in that said inner core (2) has a side wall provided with a plurality of notches (8); the notch (8) is arranged in parallel to the axial direction of the inner core (2); the notch (8) penetrates through the top surface and the bottom surface of the inner core (2).

4. A pouring valve according to claim 1, characterised in that the valve body (1) is provided with an installation groove (9) in its outer circumferential surface, said installation groove (9) being provided with a series of rubber sleeves (10) of different outer diameter dimensions; the cross section T-shaped structure of the rubber sleeve (10) is characterized in that the inner wall surface of the rubber sleeve (10) is matched with the mounting groove (9).

5. The pouring valve according to claim 2, further comprising a base (11), wherein the base (11) is of a bowl-shaped structure, and a through hole is formed in the center of the base (11) and is communicated with the groove (7).

6. The pouring valve according to claim 5, characterized in that the bottom of the valve body (1) is embedded in the base (11), and the bottom of the cover shell is clamped with the base (11); one end of the spring (5) is abutted against the bottom surface of the base (11); the other end of the spring (5) extends into the groove (7) and acts on the inner core (2).

7. The pouring valve according to claim 1, characterized in that the top of the inner core (2) is provided with a sealing element (4) which is structurally matched with the air outlet (3), the sealing element (4) is completely inserted into the air outlet (3) so that the air outlet (3) is closed, the inner core (2) in a normal working state is not contacted with the inner wall of the air outlet (3), the inner core (2) is arranged in the valve body (1) through a spring (5), and the spring (5) provides the force for the inner core (2) to face the air outlet (3).

8. The pouring valve according to claim 7, wherein the outlet aperture (3) is of inverted conical configuration and the closure member (4) is of inverted conical configuration; an air outlet pipe (6) is arranged on the valve body (1), and the air outlet pipe (6) is communicated with the air outlet hole (3).

9. Pouring valve according to claim 1, characterised in that the bottom wall of the valve body (1) is provided with an opening (12).

10. A fuel tank comprising a tank body provided with a tank port at an upper end thereof and a filler spout according to any one of claims 1 to 9, the filler spout being mounted on the tank port.